    <aside class="lyear-layout-sidebar">
      <!-- logo -->
      <div id="logo" class="sidebar-header">
        <a href="index"><img src="images/logo-sidebar.png" title="鹊桥" alt="鹊桥" /></a>
      </div>
      <div class="lyear-layout-sidebar-scroll"> 
        <nav class="sidebar-main">
          <ul class="nav nav-drawer">
            <li class="nav-item${ga:active($, "index")}"> <a href="index"><i class="mdi mdi-console"></i> 工作台</a> </li>
            <li class="nav-item${ga:active($, "servers")}"> <a href="servers"><i class="mdi mdi-server"></i> 服务器组</a> </li>
            <li class="nav-item${ga:active($, "clients")}"> <a href="clients"><i class="mdi mdi-key"></i> 隧道管理</a> </li>
            <li class="nav-item${ga:active($, "users")}"> <a href="users"><i class="mdi mdi-account-circle"></i> 用户管理</a> </li>
            <li class="nav-item${ga:active($, "settings")}"> <a href="settings"><i class="mdi mdi-settings"></i> 基础设置</a> </li>
          </ul>
        </nav>
      </div>
    </aside>